{
  "date" : "2013-09-01",
  "identifier_doecontract" : "",
  "subject" : "37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; EMISSION; EXCITATION; PEAKS; PLASMA DIAGNOSTICS; PULSES; SENSITIVITY; SIGNALS; SPECTROSCOPY; TEMPERATURE MEASUREMENT; WAVELENGTHS",
  "description" : "Dual-pulse (DP) laser-induced breakdown spectroscopy (LIBS) provides significant improvement in signal intensity as compared to conventional single-pulse LIBS. We investigated collinear DPLIBS experimental performance using various laser wavelength combinations employing 1064 nm, 532 nm, and 266 nm Nd:YAG lasers. In particular, the role of the pre-pulse laser wavelength, inter-pulse delay times, and energies of the reheating pulses on LIBS sensitivity improvements is studied. Wavelengths of 1064 nm, 532 nm, and 266 nm pulses were used for generating pre-pulse plasma while 1064 nm pulse was used for reheating the pre-formed plasma generated by the pre-pulse. Significant emission intensity enhancement is noticed for all reheated plasma regardless of the pre-pulse excitation beam wavelength compared to single pulse LIBS. A dual peak in signal enhancement was observed for different inter-pulse delays, especially for 1064:1064 nm combinations, which is explained based on temperature measurement and shockwave expansion phenomenon. Our results also show that 266 nm:1064 nm combination provided maximum absolute signal intensity as compared to 1064 nm:1064 nm or 532 nm:1064 nm. - Highlights: • Role of pre-pulse wavelength and inter-pulse delay on LIBS sensitivity was studied. • For NIR:NIR combination, dual peaks in signal enhancement were observed. • UV:NIR combination resulted in maximum absolute signal intensity. • Persistence of neutral species was increased for double pulse.",
  "language" : "English",
  "identifier_report" : "",
  "publisher_sponsor" : "",
  "publisher_country" : "Netherlands",
  "source" : "NLN",
  "purl" : "",
  "title" : "Role of laser pre-pulse wavelength and inter-pulse delay on signal enhancement in collinear double-pulse laser-induced breakdown spectroscopy",
  "type" : "Journal Article",
  "subject_related" : "",
  "relation" : "Journal Name: Spectrochimica Acta. Part B, Atomic Spectroscopy; Journal Volume: 87; Conference: LIBS 2012: 7. international conference on laser induced breakdown spectroscopy, Luxor (Egypt), 29 Sep - 4 Oct 2012; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)",
  "entry_date" : "2015-05-14",
  "subject_list" : [ "37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY", "EMISSION", "EXCITATION", "PEAKS", "PLASMA DIAGNOSTICS", "PULSES", "SENSITIVITY", "SIGNALS", "SPECTROSCOPY", "TEMPERATURE MEASUREMENT", "WAVELENGTHS" ],
  "publisher_availability" : "Available from http://dx.doi.org/10.1016/j.sab.2013.05.015",
  "rights" : "",
  "announced_date" : "2015-05-14",
  "type_qualifier" : "Conference",
  "has_fulltext" : false,
  "coverage" : "",
  "identifier" : "PII: S0584-8547(13)00118-3",
  "journal_volume" : "87",
  "creator" : "Diwakar, P.K., E-mail: pdiwakar@purdue.edu; Harilal, S. S.; Freeman, J. R.; Hassanein, A.",
  "site_ownership_code" : "NLN",
  "osti_id" : "22336696",
  "journal_issue" : "",
  "resource_type" : "JOUR",
  "format" : "Medium: X; Size: page(s) 65-73",
  "journal_name" : [ ],
  "contributing_organizations" : "",
  "citation_location" : "https://www.osti.gov/etdeweb/biblio/22336696",
  "publication_year" : 2013,
  "subject_list_commas" : "37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY, EMISSION, EXCITATION, PEAKS, PLASMA DIAGNOSTICS, PULSES, SENSITIVITY, SIGNALS, SPECTROSCOPY, TEMPERATURE MEASUREMENT, WAVELENGTHS",
  "publisher" : "",
  "identifier_other" : "Journal ID: ISSN 0584-8547; CODEN: SAASBH; Other: PII: S0584-8547(13)00118-3; TRN: NL14S6730042990",
  "publisher_research" : "",
  "creators_list" : [ "Diwakar, P.K., E-mail: pdiwakar@purdue.edu", "Harilal, S. S.", "Freeman, J. R.", "Hassanein, A." ],
  "doi" : "https://doi.org/10.1016/J.SAB.2013.05.015"
}